Sorry for a lenghty reply but i thought u needed a more comprehensive advise.
If u are doing self study then choose ur books carefully. that's what i learned from my life.
If u took coaching but now u are doing self study i bet you would be facing problem in remembering concepts. i suggest u to buy books that are good for self studying and also purchase scanner if u dont get with them.
group 2 has 2 theoritical subjects which means student take them lightly and their results get screwed(no offence). having 2 theory subjects u need to focus on presentation skills of ur answers.
do research of what type of questions come in exams( can do when ur starting a chapter)
after doing a topic see if there is a question in scanner, if there is any then try to frame ur answer in ur mind without looking the scanners anwers and when ur done then see if there is any difference. It will help u get an idea of how to write answers.