I’m not a tourist guide, but for sure I’m a foreigner in this Country too, so here are some websites you can use to check some things in Amsterdam and the rest of the Netherlands while you are here.
Time Out magazine is one of the best magazines for people living abroad. There is one for London, another for Lisbon, and another for Amsterdam (and so on). Here you can find the BEST tips to have fun in Amsterdam as well as what is happening during these months, like music festivals, restaurants, bars, exhibitions, shows, shops, night and day life, etc:
http://www.timeout.com/amsterdam/
This link you can use to know what will happen in the Netherlands (and all over the world) so that you can go and visit some places:
http://www.whatsonwhen.com/sisp/index.htm
This other website will give you a list of the BEST concerts happening. I advise you to buy the tickets online, with one month in advance, at least (welcome to the Dutch way!):
http://www.livenation.nl/
Also VERY useful is the I am Amsterdam web site and card (in case you like to visit museums). Check the website, it’s a good one:
http://www.iamsterdam.com/
This other website is something you can use every time you travel, it has tips from people all over the world, and can also give you restaurants, bars, etc:
http://www.virtualtourist.com/
HAVE FUN!!!!!!!!