In this tutorial you will learn how to install Nextgen Gallery a free wordpress galley plugin in my opinion is a best wordpress plugin that I have used in few clients wordpress websites.There are other plugins but Nextgen Gallery is great as is easy to install,
has lots of options and the author does keep the plugin updated.
You install Nexgen Gallery as you install any other plugin by searching for plugin,if you do not know how to install plugins then you can register on this website free and there is video in Tutorial Videos.
Once you have installed and activated the plugin you will have extra menu in admin panel.
[adsense float = 'center']

Add a new Galley
You will need create a gallery before you can upload images in the gallery. Click on Add gallery/Images if this is your first gallery then you will need to enter gallery name in box else click on Add New Gallery Tab if you want to create 2nd gallery.
and click on add gallery to save.
Upload Images
Click on Upload images Tab, click on Browse Button, select the images you want to upload from the pop and click Open, choose the gallery from drop down menu and click Start Upload Button.
Display Gallery in pages or posts
You can use short code to display gallery in pages and posts and you will find different ways you can display your gallery or images on this website
http://nextgen-gallery.com/tag/shortcodes/
I have article and video where you can learn how to wrap text around Gallery/images.
As always if you have any questions you are welcome to comment and will be glad to help you.
Discover how you can blog like othe successfull bloggers with simple step by step Techniques.