not tech savvy enough to try updating

Hi

Someone else built my site several years ago and I don’t know anything about code.

I have never updated to new versions when they come out because if I mess up my site I wouldn’t have a clue how to fix it.

So, I’m still using the 3.4.2 that was originally installed.

I have a feeling that if I went from 3.4.2 to 4 that my website would implode and be destroyed.

https://www.ironstruck.com is my website and the only problem I currently have is my big image slider thingy seems to have shrunk and I don’t know how to enlarge it and fill the space again.