1) start on the library homepage (even if you are using PubMed)
2) Use the E-Journal portal, SLUth, or a database to find an journal or article
3) click on. 
4) enter your SLU credentials
5) you should now be able to download/print
If an article isn't available online, you may request it via:
ILLiad: Digital Document Delivery. (you will need to fill out a one time account)
Find at SLU - PubMed - video that walks you through the process of accessing an article via PubMed