For example, if i have a USB with KALI Linux installed on it..i download bitcore on there and install it will that theoretically work?..also Lets say i sent 1BTC from coinbase to my wallet on my USB stick...and my wallet wasnt online..that 1BTC would not get to my wallet until i physically plugged my usb stick in to a online computer correct?...where does that 1BTC go in the mean time? in some time of holding space on coinbase?....thanks for all the help guys..
No. That is the common noob but completely wrong view of how Bitcoin works. Don't feel back most conventional money systems work that way, but Bitcoin doesn't.
There are no coins in your wallet (there are no coins in my wallet either). "Your bitcoins" are on every single computer which has a copy of the blockchain (>100,000 at last count). But wait you might be thinking if "my coins" are on 100,000 strangers computers what prevents strangers from just spending them? Transactions have to be SIGNED by the private key of the coins being spent. Your wallet is really just a keychain, it holds the private keys for your address(es). The "coins" are in the blockchain but the keys in your wallet are what gives you the exclusive ability to create new transactions "spending" them. The blockchain is a ledger, by parsing all the transactions all nodes "know" where all the "coins" are at the current time. When your wallet shows you have 0.25 BTC, what it really means is "parsing the blockchain I find a number of unspent outputs for which I have the private key, and the total value of those unspent outputs is 0.25 BTC".
So to answer your question, you don't need to be online. If someone sends Bitcoins to your address, they are signing over bitcoins they control to you. That action is recorded in the blockchain and a copy is kept by every full node. Now only "you" (or someone with your private keys) can sign those coins over to someone else. Now the flip side is that if you LOSE your wallet while it may not contain any coins, it does contain the keys which are the only way those coins can ever be moved/spent. So the coins remain in the blockchain but they can now never be moved by anyone.
I glossed over a lot of details because "Bitcoin is complicated". If you are interested in learning how Bitcoin "really works" you should read it in the words of Satoshi.
https://bitcoin.org/bitcoin.pdf