diff --git a/Examples/Basic_cosmo_example.jl b/Examples/Basic_cosmo_example.jl
new file mode 100644
index 0000000..a954c4c
--- /dev/null
+++ b/Examples/Basic_cosmo_example.jl
@@ -0,0 +1,150 @@
+### A Pluto.jl notebook ###
+# v0.19.36
+
+using Markdown
+using InteractiveUtils
+
+# ╔═╡ eb918f38-b7cc-11ee-1849-e9a292ae285b
+begin
+ import Pkg
+ # activate the shared project environment
+ Pkg.activate(Base.current_project())
+ # instantiate, i.e. make sure that all packages are downloaded
+ Pkg.instantiate()
+
+ using Cosmic
+end
+
+# ╔═╡ 1473e933-d04a-4a0b-90d8-ab33df9ff3ee
+using Plots,LaTeXStrings
+
+# ╔═╡ 8d34d1a3-6a28-461c-9e03-cc047654ce84
+md"Now we can use Cosmic Package just use."
+
+# ╔═╡ ebf05ec9-dc2e-4ac9-a231-fd05e170e0a2
+md"The first step is to create your Cosmology system. I will be using Flat model."
+
+# ╔═╡ 667c6bda-f78c-4923-b93c-1942f5b1f258
+c = cosmology()#by default values will be taken.
+
+# ╔═╡ dc415649-5683-415e-a1b8-a31f48080d94
+md"The first value is h, then comes $\Omega_\Lambda$, then $\Omega_m$ and finally $\Omega_r$."
+
+# ╔═╡ 0314d0ad-d666-41fb-8e5a-bd4a0a497ba6
+cop = cosmology(Ωk =0.1)#For some other model can be used
+
+# ╔═╡ a2a0d4d9-46cc-4f18-9311-de22ea571b4e
+md"For conversion between redshift and scale factor, there are two functions."
+
+# ╔═╡ 361cb06f-4e96-48a1-a23e-e38106ef4ed8
+a(100)#computes the scalefactor for z=100
+
+# ╔═╡ 52930937-1f73-470d-b041-9558a11a7658
+redshift(0.0099099)#compute the redshift for a = 0.0099099
+
+# ╔═╡ 5d11e724-326a-436f-94f4-211f99d30990
+md"To get the hubble's constant at some redshift use H(c::AbstractCosmology,z) as"
+
+# ╔═╡ 7e4c3515-02f7-498b-829f-23e78997fb70
+H(c,100)#takes your cosmology model and z
+
+# ╔═╡ 3aa50f1f-04e8-4d0d-a650-c0ef8e75089f
+md"Let's try plotting $\frac{H(z)}{(1+z)}$ vs $z$."
+
+# ╔═╡ 2ee6b0bf-3511-4fea-8132-9896f5f112ec
+begin
+ z_vals = range(0, 2.5, length=1000)
+ H_1z(z) = H(c,z)/(1+z)
+ H_vals = H_1z.(z_vals)
+ plot(z_vals,H_vals,lw=2.5, label="")
+ xlabel!(L"Redshift ($z$)")
+ ylabel!(L"$\frac{H(z)}{1+z}$")
+end
+
+# ╔═╡ 4984ac71-b8eb-4085-a20a-9a2ac5f439a4
+md"We can also compute Hubble's distance. For that use hubble_distance(c,z) function."
+
+# ╔═╡ 2bb09fc2-f284-4d1e-8d58-55365d31dc20
+begin
+ # z_vals = range(0, 2.5, length=1000)
+ Hd_1z(z) = hubble_distance(c,z)
+ Hd_vals = Hd_1z.(z_vals)
+ plot(z_vals,Hd_vals,lw=2.5, label="")
+ xlabel!(L"Redshift ($z$)")
+ ylabel!(L"$H_d(z)$")
+end
+
+# ╔═╡ d3e187e5-13ee-4edb-bfa0-25aee07b712e
+md"We can also find the age of the universe at some certain z value."
+
+# ╔═╡ b02a5df0-b196-4418-84b0-52633d6e49e0
+age(c,0)#z = 0 means today's time.
+
+# ╔═╡ 511ade9b-ccf8-4edd-a5c5-edf2ba869815
+md"This gives us the age of the universe in sec. If you want to get the age in Gigayear, just convert it or else use ageGyr(c,z)."
+
+# ╔═╡ 7ed40ab7-c190-4bf0-bcf6-eccbb422784e
+ageGyr(c,0)# age of our universe.
+
+# ╔═╡ ac2675fd-b0c9-4ba7-95eb-79f72bddc678
+md"For computing the scale factor as a function of time, there are two functions, scalefact_part and scalefact. The first one is efficient but it second one is more accurate. Both takes input in Gyr."
+
+# ╔═╡ f1b373f4-43bd-4312-bcaf-49ff3fc2d31a
+scalefact_part(c,100)
+
+# ╔═╡ efabfaa1-f0bc-466a-bb98-49795c44e200
+scale_fact(c,100)
+
+# ╔═╡ b9dc315c-5a35-41fd-b27d-f1f9a4fc7e81
+md"Let's make a plot for both of them."
+
+# ╔═╡ 1e09ba10-91d6-46f0-bc8f-b9b1a82220fd
+begin
+ tgyr = range(0.1,30.8,length=10_000)
+ dgf(t) = scale_fact(c,t)
+ a_vals = dgf.(tgyr)
+ plot(tgyr,a_vals,lw=2.5, label="using scale_fact")
+end
+
+# ╔═╡ 12b9855f-3951-4ba9-acdf-65449b6c55bf
+begin
+ dgf_part(t) = scalefact_part(c,t)
+ a_vals_part = dgf_part.(tgyr)
+ plot(tgyr,a_vals_part,lw=2.5, label="using scalefact_part")
+end
+
+# ╔═╡ c4681d55-b75b-46c3-b5c1-789568890358
+plot!(tgyr,a_vals,lw=2.5, label="using scale_fact")#They are almost identical.
+
+# ╔═╡ dee6876a-5a84-437f-a953-881c441f34bf
+plot!([13.807434539,13.807434539],[0,2.5],lc=:green,lw=2.5,label="t = 13.80743",ls=:dash)
+
+# ╔═╡ Cell order:
+# ╠═eb918f38-b7cc-11ee-1849-e9a292ae285b
+# ╟─8d34d1a3-6a28-461c-9e03-cc047654ce84
+# ╟─ebf05ec9-dc2e-4ac9-a231-fd05e170e0a2
+# ╠═667c6bda-f78c-4923-b93c-1942f5b1f258
+# ╟─dc415649-5683-415e-a1b8-a31f48080d94
+# ╠═0314d0ad-d666-41fb-8e5a-bd4a0a497ba6
+# ╟─a2a0d4d9-46cc-4f18-9311-de22ea571b4e
+# ╠═361cb06f-4e96-48a1-a23e-e38106ef4ed8
+# ╠═52930937-1f73-470d-b041-9558a11a7658
+# ╟─5d11e724-326a-436f-94f4-211f99d30990
+# ╠═7e4c3515-02f7-498b-829f-23e78997fb70
+# ╟─3aa50f1f-04e8-4d0d-a650-c0ef8e75089f
+# ╠═1473e933-d04a-4a0b-90d8-ab33df9ff3ee
+# ╠═2ee6b0bf-3511-4fea-8132-9896f5f112ec
+# ╟─4984ac71-b8eb-4085-a20a-9a2ac5f439a4
+# ╠═2bb09fc2-f284-4d1e-8d58-55365d31dc20
+# ╟─d3e187e5-13ee-4edb-bfa0-25aee07b712e
+# ╠═b02a5df0-b196-4418-84b0-52633d6e49e0
+# ╟─511ade9b-ccf8-4edd-a5c5-edf2ba869815
+# ╠═7ed40ab7-c190-4bf0-bcf6-eccbb422784e
+# ╟─ac2675fd-b0c9-4ba7-95eb-79f72bddc678
+# ╠═f1b373f4-43bd-4312-bcaf-49ff3fc2d31a
+# ╠═efabfaa1-f0bc-466a-bb98-49795c44e200
+# ╠═b9dc315c-5a35-41fd-b27d-f1f9a4fc7e81
+# ╠═1e09ba10-91d6-46f0-bc8f-b9b1a82220fd
+# ╠═12b9855f-3951-4ba9-acdf-65449b6c55bf
+# ╠═c4681d55-b75b-46c3-b5c1-789568890358
+# ╠═dee6876a-5a84-437f-a953-881c441f34bf
diff --git a/Project.toml b/Project.toml
index a362ded..689b028 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,12 +11,13 @@ ReverseDiff = "37e2e3b7-166d-5795-8a7a-e32c996b4267"
Roots = "f2b01f46-fcfa-551c-844a-d8ac1e96c665"
[compat]
-julia = "1"
DifferentialEquations = "7.12.0 , 7.11.0, 7.6.0, 6.17.0"
ForwardDiff = "0.10.36"
+QuadGK = "2.9.4 , 2.9.3 , 2.9.2"
ReverseDiff = "1.15.1"
Roots = "2.0.22"
-QuadGK = "2.9.4 , 2.9.3 , 2.9.2"
+julia = "1"
+
[extras]
Revise = "295af30f-e4ad-537b-8983-00126c2a3abe"
Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/README.md b/README.md
index 5fbfab6..2977e41 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,20 @@
[](https://ci.appveyor.com/project/aburousan/Cosmic-jl)
[](https://codecov.io/gh/aburousan/Cosmic.jl)
[](https://coveralls.io/github/aburousan/Cosmic.jl?branch=main)
+
+
+[Cosmic](https://github.com/aburousan/Cosmic.jl) provides functions for quick cosmological calculations, written in pure Julia. This will contains all the necessary functions following the **Cosmology** Book by **David Baumann**. This is build following a cosmology course in Indian Association for The Cultivation of Science.
+
+## Installation
+
+Bolt requires Julia 1.9+. To install, from the package prompt, run:
+
+```
+pkg> add https://github.com/aburousan/Cosmic.jl
+```
+Then, to load the package
+
+```julia-repl
+julia> using Cosmic
+```
+To see examples, check the [Example](https://github.com/aburousan/Cosmic.jl/tree/main/Examples) folder (Specially the pluto notebook).
diff --git a/docs/src/index.md b/docs/src/index.md
index cd884ab..1b565e5 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -2,13 +2,32 @@
CurrentModule = Cosmic
```
-# cosmic
+# Cosmic
-Documentation for [cosmic](https://github.com/aburousan/cosmic.jl).
+[Cosmic](https://github.com/aburousan/Cosmic.jl) provides functions for quick cosmological calculations, written in pure Julia. This will contains all the necessary functions following the **Cosmology** Book by **David Baumann**.
+## Installation
+
+Bolt requires Julia 1.9+. To install, from the package prompt, run:
+
+```
+pkg> add https://github.com/aburousan/Cosmic.jl
+```
+Then, to load the package
+
+```julia-repl
+julia> using Cosmic
+```
+To see examples, check the [Example](https://github.com/aburousan/Cosmic.jl/tree/main/Examples) folder (Specially the pluto notebook).
+## Contributing
+
+If you would like to contribute to `Cosmic.jl`, head over to our [GitHub page](https://github.com/aburousan/Cosmic.jl) and open an issue or pull request!
+
+For any new features, we ask the contributors to add any relevant unit tests and bump the package version by one minor version.
+Documentation for
```@index
```
```@autodocs
-Modules = [cosmic]
+Modules = [Cosmic]
```
diff --git a/src/Basic_cosmo_example.html b/src/Basic_cosmo_example.html
new file mode 100644
index 0000000..50abc62
--- /dev/null
+++ b/src/Basic_cosmo_example.html
@@ -0,0 +1,15 @@
+
+
+
+
+
+