working puzzles from some books are definitely beneficial....provided you are working on them on an actual board with actual pieces.
I've already see this claim before but I just don't get it. What's the advantage of solving puzzles on real chess board over solving them using software or website? The obvious advantage of software/web is that you don't waste time on setting positions manually.
Yes @BobbyTalparov, I'm not going to go with that said positions a day. I'll find out how many I can do and adjust accordingly.
That wasn't really what I meant. The idea of studying specific things every day will get boring and monotonous, and you'll likely deviate quickly. A better approach is to have several things you could do and try to do 1 or 2 of them every day.
For example, I've been working my way through Bronstein's Zurich 1953 lately, as well as studying de la Villa's "100 Endgames You Must Know", and 3 different tactics books. Any any given day, I might do 1 or 2 of those study activities. It is simply a matter of time and focus. Some days I really feel like focusing on tactics and will spend all of my study time just practicing tactics. Other days, I may want to work through 2-3 games from Bronstein's book and then practice endgame positions against engines. And still other days, I may spend my entire study time simply analyzing my OTB games. If I was doing all of these activities every day, it would be very draining.
Cross training. Also popular in sports training.