Hello student CA Foundation Exam is much similar to the things which you had already done in class 12th (commerce stream). It can be clear easily without coaching but if you are not going with the support of teachers, then you may feel difficulties like the concepts of Law or with the Mathematics (for non-maths students).

If you're a student of commerce background and you've good grip on class 11nd 12 then it's not very tough but you need to work hard with high dedication.
Do solve queries two three times.

Nothing is difficult I know few people who cleared ca final without coaching so nothing is difficult all you need to work hard.

Feel free to comment if you have any doubt.
Good luck