Git for newcomers

Git allows a team of people to work together, all using the same files. And it helps the team cope with the confusion that tends to happen when multiple people are editing the same files.

Resources to learn it shown below.

First you need to install GIT CLIENT

Online trainings:

• Learn git for 50 steps
• Git codeschool

Books:

• ProGit (rus)
• ProGit (en)
• Interesting "git-helper"
• Think like (a) GIT
• Git examples

I think it's quite enough to start use git.

Maven for newcomers

Useful links about apache maven shown below:

• Maven For Beginners
• maven.apache.org
• Cookbook_contains_examples
• Maven-tutorials_(mkyong)
• Tutorialspoint (maven_tutorials)
• Tutorials_Maven

Books:

• Apache Maven 3 Cookbook_pdf 

Video tutorial

• Java Brains Maven

Maven has a global repository

OCPJP 7 (Oracle Certified Professional Java Programmer)

I've found some interesting books for OCPJP 7 certification:

• Certified Programmer for Java 6 Exam 310-065
• Oracle tutorial
• Oracle Certified Professional Java SE 7 Programmer Exams 1Z0-804 and 1Z0-805
• Tutorials Java

And a few mock exams to get more practice:

• free-scjp-mock-exams (Nikos Pougounias)
• habrahabr - part_1
• habrahabr - part_2
• Web-exam (registration required)
• List ScjpMockTests
• Oracle has 10 sample questions
• TechFAQ360 has a free mock test (registration required)
• Enthuware (registration required)

Video lessons

• Lessons from Yuriy Tkach

I think it will be enough to pass the exam and get the certificate :)