Self study on F5

Dear Sir

I am new here and i want to do self study F5 but some people says its really tough for self study without being in a class thats why I am just worried that if i do self study and when i will get any complex topic or calculation about any topic, And when i am practicing past exam question and if i get any new data added in the question papers and can not understand about how to solve it and if i ask you for solution and explanation about that problems and you ignore me to give proper explanation.

Or should not i be worried about that and i should do self study and if i get any problems about any complex calculation, You will help me out with your best possible way.

Thanking you in advance

Kind Regards
Chowdhury