If you brother have the Gmail account then you can share it - Log on > click Admin on your upper right side > select user tab > click on "New User" button.
actually you don't have to have a gmail account to access analytics. whatever your analytics login email is, you just add that.
Just give his email id access, then he will be able to see. This you can do from setting tab, Admin panel.
Also note, you can set the additional account as merely a simple user, or an administrator. Just remember this, you don't want to be giving someone admin access unless you trust them. Obviously I know in this case it's your brother, so no worries there of course.
you can get idea from this website http://www.techwyse.com/blog/website-analytics/giving-access-to-google-anaytics/. you can make him as users by which he can see analytic data.
If you have admin rights then its possible you need to just go in analytic admin section and click on add users and just type your brother email address and save. It will work
Yes you can definetly share your google analytics account with different accounts. There are several steps which you have to follow to share- 1 Log in to your account 2 Click Admin on your upper right side 3 Select user tab 4 Click on "New User" button. 5 Provide email-id 6 Press ok
Just try this method what saif rizvi said in his post. Just play a while with analytics you will come to know.