Hi you can install the shelf yourself. The product comes with instructions on how to hang it. The most important part is getting the shelf measured correctly. As long as the shelf is the right size, it is real easy to do.

One helpful hint when installing the shelf, make sure it is level. I prefer to use a lazer level when doing this.

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Hello friend. Installation of the blinds is not so tough if you follow the right guidelines. I also tried installation myself by read some guidelines. Have look at this guidelines

http://www.rugsandblinds.com/easy-simple-ways-to-mend-and-install-vertical-window-blinds.aspx

You can install them side mounted with the aide of the shelf, but you have to order it from a blinds place, as I don't think its available retail. There's also a product called a "Floating Header" that's fitted to your window and practically invisible, but very pricey. You can also make your own "shelf" but it involves some building (a sort of partial cornice box) and painting it.