ForI am sure my wife would like to have a canister full of breakfast cereals for eat every day, but she knows that it is not healthy.

As far as studying goes, it affords to me pleasant momentgood times, the feeling of been growing and learning, and last but certainly not least, it can become a source ofopen opportunity at aies in the near future.

For sure my wife would like to have a canister full of breakfast cereals for to eat every day, but she knows that it is not healthy.

"cereals" refers to multiple brands/kinds of cereal, or referring to multiple different kinds of grains like wheat, rice, oats... and i think "breakfast" here is unnecessary, but the word "cereal" is never used to refer to grains where i live so that might be why i think that :v

As far as studying goes, it affords to me pleasant moments, the feeling of been growing, and last but certainly not least it can become a source of opportunity at ain the near future.

"as far as studying goes" is i think an interjectory phrase so it technically should be separated by a comma

i'm not entirely certain what you want to say with the next 2 phrases - I rewrote them so they were grammatically correct but they still sound very unnatural. i'm not really sure to rewrite them to sound more natural without changing the meaning :,) this is the best i could do:

As far as studying goes, it's a pleasant experience, and it's nice to see my progress and growth. And, last but certainly not least, it'll provide many opportunities in the near future.