i'm a hobby photographer and i want to build a website to show my pictures. Later i could imagine to sell some of them (posters). Can anybody spend some references for a programm that is easy to use? it must not open source, but even ot to expensive, too.
You might be better to avoid ideas like Homestead, or most online sitebuilders. Better to have a site you are more in control of and can easily adapt to your needs. Ideally building this yourself in (X)HTML/CSS or at worst using one of the better WYSIWYG builders.
Then you can incorporate your choice of image display and one which works well for customers plus search engines. With both in mind, nothing wrong with the type of galleries you see on this site:
Plenty to choose from and very accessible. Depending on the volume and approach you might not need a shopping cart solution, just buy now buttons to a free cart, even paypal. If you do want to build with dedicated software to start with, lots to choose from e.g.
Easy to learn, free, several image gallery plugins and a few have managed to build cart type sites. This is XML based though rather than a true database so not suitable for that type of operation on any scale.
i tried web to date for a while and it's quite good to build websites without html knowledge. but in your case it coul be difficult to get users to your site. have you think about shutterstock or fototalia? because it could be difficult to get users. maybe an online solution have more advantages for a higher request.