You can find the parts on the linked page.
Paintball pump guns are sold at a number of retail locations and online stores. Walmart, Amazon, and eBay, for example, are each known to sell this item.
yes
Yes. you may need a neck adapter though.
Generally, decent paintball markers cost the same everywhere, unless you can find free shipping online. The cheapest and worst markers are available at Retail stores like Walmart.
One can find discounted paintball accessories from Just Paintball, Paintballing, Discount Paintball, Zephyr Paintball, Outpost Paintball, Paintball UK and Armed Paintball stores.
Paintball sniper rifles are sold anywhere ammunition and gun supplies are sold. Walmart carries paintball rifles and accessories as well in most of their stores.
When someone is just doing paintball for the first time they need a paintball gun that is easy to use and light. The recommended one is a Tippman 98. Any of the variants will be good.
$330 american.
Brass Eagle, anything from walmart, and spyders,
yes
You can find paintball fields by asking players, or looking for places with tourism brochures, as paintball fields often advertise in them.