Picasa, the online web album from Google which is similar to flickr, photobucket etc. but has a separate tool which can be downloaded to your PC and from there you can upload your pictures or photos to the web album of picasa.
So if you are using an Apple Macbook, or macbook air, then you can download the Picasa web uploader for mac from here.
Install the web uploader app in your mac and then open the “Picasa Uploader” which might be there in your applications folder, or you can easily spot it through the spotlight in your mac.
Dialog box appears asking you to sign into your picasa account. Login and proceed to next window.
Next, i would be explaining how to place albums and slideshow in wordpress blogs and other websites.
This was actually the first time i uploaded pictures to picasa album though the uploader but i knew how to do it. Check the album of Jessica Alba that i created during this tutorial.