Don't spend your money for something which is not really needed for you,or you will fall into credit card trap.
Only use credit card if you have source of income to pay the debt at the end of cycle or you will be charged Highest interest for the debt amount.
So lets say that i use my Credit card and pay for my groceries. But i connected my Debit card to my credit card so whenever i pay for things , it charges my credit card and automatically pays off my credit card debt.
Should i keep my credit card utilization under 30%? Should i get multiple credit cards to build my credit?
If you are capable of autopay all the debt of credit card then why you need a credit card? Having credit card is really not good because it will be recorded as your are getting more loans.However keep the credit card utilization less than 50% which will give you good record.