Yosemite 10.10.5 and Wi-Fi Bugs from ****

I "upgraded" to Yosemite 10.10.5 on August 20th and have had constant problems connected to Wi-Fi. It's turning off and on, disconnecting, hanging up. I can't even stay on long enough to see if any other updates are available to fix the problem. I had to type this out on my tablet and send it as a copy/paste to email in order to quickly get it on here to ask what to do. In order to have any connection at all, I have to turn off my Wi-Fi in the middle of trying to load a page, then turn it back on quickly, click refresh, and the page comes up. I have to quickly do what I can before losing the connection and having to manually turn it all off and on again to reload and send anything.

Is there a way to fix this? I've noticed others who have had the same problem, but there seems to be no one who has an answer. Is there a way to get rid of the update that was supposed to debug Yosemite?

I have had 0 problems with connectivity until this upgrade, which seems to be nothing but a collection of bugs.

I am a writer and blogger, and I need my computer to be online. I can't type on a touchpad to save my life. I need help. Please.