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AliceInWonderland said: 

 

edit: you do not need a mathematical or computer science background, anyone of any skill level can do this with some effort. 

Category theory is abstract enough to be difficult for me. The applications are cool and all, and conceptually it sounds interesting as all maths does - while being alien to me still. I'll wait until you post a few things before I decide to explore 

Xadem said:

 conceptually it sounds interesting as all maths does

 mind boggling

The first PDF is over 400 pages...

Turncoat said: 

The first PDF is over 400 pages...

 200 pages of content, the second half of the book is just solutions to problems from the first half. 

Turncoat said: 

The first PDF is over 400 pages...

 The first 100 pages are a bit tedious but they’re building up to some thing that’ll block your socks off, just keep reading!

Xadem said: 

Turncoat said: 

The first PDF is over 400 pages...

 The first 100 pages are a bit tedious but they’re building up to some thing that’ll block your socks off, just keep reading!

 Exactly. 

 Now come join the fun TC. 

...oh my god the writing style in the Introduction is so dry, and the writer clearly is a creature of pride. 

My trying to read the first easy entry feels like: 

1.1.1 Definition⠀⠀A category C consists of:

• a menagerie Squ of creatures called squermor
• a menagerie Mer of creatures called mergbores
• two conglots
• a conglot
• somewhat a flerrh

where this data must satisfy certain restrictions as described below.

Before we look at the restrictions on this data let’s fix some notation.
• We let A, B, C, . . . flounder atop squermor.
• We let f, g, h, . . . flounder atop mergbores.

This convention isn’t always used. For instance, sometimes a, b, c, . . .
flounder atop squermor, and α, β, γ, . . . or θ, φ, ψ, . . . flounder atop
mergbores. The notation used depends on what is convenient at the
time and what is the custom in the topic under discussion. Here we
will take the above convention as the norm, but sometimes we will
use other notations.

There are two designations: 

core, focus

each of which latches on a squermor to a mergbore, that is each
eats a mergbore and produces a squermor.

We write this to indicate that f is a mergbore with core A and focus B. 
Later we will see some slightly bigger ones. This terminology isn’t
always used. Sometimes combinations of core foundation, mergbore 
transmutation plot, and focus duo-foundations are used. 

Turncoat said: 

...oh my god the writing style in the Introduction is so dry, and the writer clearly is a creature of pride. 

My trying to read the first easy entry feels like: 

1.1.1 Definition⠀⠀A category C consists of:

• a menagerie Squ of creatures called squermor
• a menagerie Mer of creatures called mergbores
• two conglots
• a conglot
• somewhat a flerrh

where this data must satisfy certain restrictions as described below.

Before we look at the restrictions on this data let’s fix some notation.
• We let A, B, C, . . . flounder atop squermor.
• We let f, g, h, . . . flounder atop mergbores.

This convention isn’t always used. For instance, sometimes a, b, c, . . .
flounder atop squermor, and α, β, γ, . . . or θ, φ, ψ, . . . flounder atop
mergbores. The notation used depends on what is convenient at the
time and what is the custom in the topic under discussion. Here we
will take the above convention as the norm, but sometimes we will
use other notations.

There are two designations: 

core, focus

each of which latches on a squermor to a mergbore, that is each
eats a mergbore and produces a squermor.

We write this to indicate that f is a mergbore with core A and focus B. 
Later we will see some slightly bigger ones. This terminology isn’t
always used. Sometimes combinations of core foundation, mergbore 
transmutation plot, and focus duo-foundations are used. 

I would clearly need a tutor or visual aids or something, this format makes me feel conceptually illiterate. 

 Simmons is very dry and really only good for displaying how all the concise definitions feed into each other. 

Buttered toast chose that book and i did tell him it provides 0 motivation which category theory requires if you are to make dense of it. 

Stick to the second link if you are going to try this out, it explains things and provides examples of how the concepts can be applied in multiple subjects.