How to promote my new book for free? How much do you guys spend on promoting your books? Also what do you use to write? Pic related is my current setup. My book is on how to rizz women btw. Thanks

Do you deduct business costs from your taxes as a full time crypto trader? How far can this go? Lapto, car, rent, gym cage, chair, table, monitor, keyboard, lights, AC, new phone, travel ticktes etc etc etc. Jusymt how much can we deduct as business expenses?