The problem for a new guy with no pumping equipment to buy from Harbor Freight is that you end up having to go to three different stores to get all of the parts you need and therefore pay 3 sets of shipping charges. That gets to be expensive.
I still think the best deal going to get everything you need from one source is Picturebrite.
By the way, that pump you showed from videocanada is very cheap and would last about 2 weeks. Don’t buy any cylinder that comes with a rubber booty on the end for sealing and for a new guy, don’t buy any pump without a gauge. If you try to buy something too cheap it will just cost you more in the end to replace all of that crap.
To choose the proper cylinder size, read this: Selecting Your Cylinder Size
Then read this: Vacuum Pumping 101