But paint brushes....

You will probably need to do this multiple times, and you will need to soak the deck brush in a bucket filled with dish soap solution and comb it out with a paintbrush comb to remove the tar residue in the brush bristles between cleanings..

Learning to use a hammer, drill, miter saw, and paintbrush is a better start. 

Use cheap roller covers "Valeur General"from Big Lots and cheap 2-inch black natural-bristle paint brushes from Harbor Freight Tools, they'll work well enough to get the job done if you replace them often.

If you are good with tools, a paint brush, a lawnmower, a broom, a shovel, etc...you have a lot you can offer to a REI mentor. 

Flooring, paint, brush removal) but both look fairly solid.  

my biggest pet peeve with my handyman is that he is messy and doesn't clean up well...washed his paint brushes so much in the bath tub in one unit that it clogged the cast iron..to be fair the pipes were on their last months anyways, but now i specify to use the hose outside....most handymen will leave a mess until the last day, and then be pissed when they have to clean it up..it's better to just clean up your little messes every day..definitely let him know he is responsible for cleaning before he leaves every day...also, my handyman likes me to buy all items, as he never has money...this is good bc i am not getting upcharged for his services of going to the store...then again, everytime he needs an extra gallon of paint, or even one little fitting for pex, he calls me while i'm at work and can't do the job until i get him the piece....I WILL NEVER DO THAT AGAIN...for now on, it will be worth it to me to pay a little extra for their services of gathering all materials, and i will get quotes for materials and labor..but that depends on how busy you are i suppose...also i like to specify that they can get paid on Wednesdays, per job they have fully completed...i will not run out there on a friday night bc he needs money and finished a job..going in, they know wednesday is pay day for them for the work that has been completed so far..let me know if you have any questions, as i have worked with a few shady people!!

I see people who seal just the grout with a paintbrush, then I see people seal both tile and grout?

Didn't know you could paint one house and get paint to fly 2 houses over with a paint brush. 

With that said, I am very handy with a hammer, wrench and paint brush and look forward to getting a little dirty on my first 'fixer'!!!