So I'm taking analytical mechanics next semester. The textbook they use is Thornton and Marion's "Classical Dynamics of Particles and Systems". I want to learn it all this month. It is feasible, but extenuating. But there is another option. I could read Robert Fitzpatrick's Newtonian Dynamics http://farside.ph.utexas.edu/teaching/336k/Newton/index.html which is shorter, and probably contains the same topics. This book is recommended by Gerard t'Hooft's page on "How to become a good theoretical physicist". Which one should I choose considering my hasty plans? One drawback I consider from Fitzpatrick's book is that it contains only a small section on Hamiltonian and Lagrangian mechanics and it appears only till the end, while on Thornton and Marion, you are presented with it in the first 1/5 of the book, and I guess uses it till the end. Suggestions? Thanks.