An enthusiastic 2nd on the recommendation of @tomic601 and others for the reading (several times) of the encyclopedic tome on record cleaning found on Bill Hart's website. Indispensable!
As for dealing with the static charge found on many used record shop-"cleaned" LP's (and even some new/sealed LP's):
I bought the original (white) Zerostat when it was first introduced, and for years suffered with it's 'fiddly-ness" (you have to squeeze the trigger veerrry slowly). Then the Nakaoka Kilavolt No. 103 was introduced. Hallelujah! At least as effective, and much easier to use.
Unfortunately the Kilavolt went out of production quite a while back, but there is an even better anti-static product now available: the Furutech Destat III. However, it is priced at an absurd $399! Music Direct currently has it on sale for $329, and if you watch ebay closely you may get as lucky as I and find one for the $200 I paid a coupla years ago.