Is there a list of sins so I can be sure? Is it the same as the list I have now as a Catholic?
Where is my punishment going to take place if I sinned a lot but still get to heaven?
Well,
Most likely they will be around the same. Usury, sorcery, murder, lying, backbiting, adultry, bieng disobedient to ones parents , cruelty to people and animals . etc… .
Gods punishments can take place any where. and at any stage. If God have mercy on us he will give us our punishments in this life instead of the after life, the early that we have the punishment the merciful God is on us . If God choose to punish someone in his grave or delays his punishment till judgement day then he is even more angry at him. Punishments can range between some spec that enters your feet to loss of health or money ofr even greater. Also the same incidents not necessarily happen as punishments but some times as tests of patience , like in Job’s case .
a believer should have a fear and hope in God. Both are required. We fear our sins and we hope in Gods mercy .
In short , muslims are ordered not to have assurance of non punisments, but to expect to be treated with mercy and generousity of a kind a merciful God .
Its sort of like telling you that i cant assure you to succeed into the exam no matter how bad you did. But i assure you if you do your best in studies and do some sincere work that you will have a generous and understanding grading .
hope this clarified,
thank you for yoru questions Demascus, Dont hesitate to ask more,
salam