US History 1 and 2

[adoncia]

Hi everyone,
I took the Social Sciences exam yesterday and found it really tough. I barely passed with a score of 50. I was'nt very well prepared and guessed on more than half the questions.What saved me i think were the questions on Sociology and Psychology.
I am planning to take the US History 1 and 2 exams next as there is a lot of overlap from the Social Sciences exam.
I need to know if the Instantcert guide is good for these 2. I do have Passyourclass guides for both but nothing apart from that.
Do you think Instantcert and Passyourclass would be sufficient or do you think i should get a REA or something else? How long do you think it should take for each of these subjects condidering the fact that taking the Social Sciences exam would'nt help much as i was not well prepared for it.
Also does US history cover the Government part also? meaning political science questions eg how many terms are allowed for the senator etc?
Your advice will be very helpful,
Thanks in advance,
Adoncia