how can i learn various process
The best way is to learn by writing and practising.
Learn and write the names and chemical symbols, reaction for every process three to four times and you will be thorough with them. That way, you will remember more clearly and not end up getting confused. The more you practice, the more confident you become.
Start with the s-block elements first. Then try to learn the p-block elements groupwise. Then take up the d-block elements and the f-block elements.