[plsvn]

I’m still waiting on the 18.3 to 19 install through the Update Manager. I’m not geek enough to do the install on top of 18.3 from the iso file.

[usconservative]

There are plenty of good step by step tutorials that include screen snapshots that can walk you through it.

I'm an Ubuntu user myself, I upgraded using the above method and it worked out very well.