Hi Maybelle,
It's probably easier to put them on via photo bucket, because you don't need to resize them.
However, when you are writing a post, beneath the text box you type in, there's a link called Additional Options. Click that, and then click on the browse button to look for your pictures to attach. If you want to post more than one, click on more attachments, then the same browse to get the picture. There is a size limit on the size of pictures, so it is best to check the size and resize if you need to before you try and start posting them.
Hope that helps- and looking forward to seeing some pics from you!
Beth