Pawn 1, knight 3, bishop 3, rook 5, queen 9: use the points to decide which captures and trades are good for you. This is a basics course with 2 lessons and 7 interactive exercises, suited to players rated around 450 (complete beginners). Every exercise is played on a real board with feedback after each move, there is nothing to install, and it is free.
Lessons in Piece values and good trades
What the pieces are worth – Pieces are not equal. Counting points helps you decide what to take and what to keep.
Free pieces – A piece that nobody protects can be taken for free. Look for them every move, on both sides.
Next steps
Basic checkmates – Win the won games: the two-rook ladder, mate with king and queen, and mate with king and rook, played out against a defending king.