as a beginner study tactics mostly, mate in 1, mate in 2. I wouldn't recommend the french to beginners. Play e5 instead.
Play the same moves and focus on finding errors so you can win pawns and pieces.
So the moves you play as black is e5, Nc6, Nf6, Bc5, d6, Be6/Bd7. Same with white e4, Nf3, Nc3, Bc4, d3, Bg5.
At your level it is the blunders that is the reason you win or lose. So study tactics. Good book to start with is: bobby fischer teaches chess. Excellent book. I think it will take you up to 1300 in a month or two.
Do you have any tips, traps, or good lines I could play? Any help would be appreciated!