@Sean Canada Hi Sean. It's very smart of you be asking these questions now instead of later.
First, you do not have to go foreward on every offer that gets accepted. You have three days to submit the actual earnest money deposit once your offer is accepted. When you submit the offer, you submit a photocopy of the actual EMD certified check so they know you have it.
Secondly, your due diligence period is just for that. If issues or problems with the proeprty are revealed that were not obvious or previously disclosed during your inspection, you can back out and get a full refund of your EMD as long as you do it WITHIN the due diligence period. That said, make sure all of your inspections are completed before that period ends. If your reason for wanting out has to do with something else, like financing, do not say it that way. Make it about the proeprty or its condition, just to be safe. Some newer contracts are trying to elimate any contingencies related to financing. Especially for investors. Occacionally banks and govenment entities will want an addendum signed along with the initial offer stating that your EMD goes hard on day one. All the more reason not to give it up until after acceptance and some due diligence.
Finally, If the counter offer you receive back includes addendums that put deed restrictions on how fast you can sell or for how much, then do not make the offer unless that works with your plans and exit strategies. For examply, Fannie Mae, HUD and Freddie Mac and some banks now state that you cannot sell the property for more than 105% of the purchase price for 90-120 days after closing. However, if you can document proof of capital improvements to the proeprty to account for the higher selling price they can waive that. Normally though those deed restrictions are nothing to worry about becasue a typical flip takes that long anyway, especially if you are rehabbing it. 30-60 days rehab time, marketing, going under contract and then the "owner occupied" buyer usually takes at least 30 days to close and get their finacning funded. By then the time has elapsed and there's no problem.
Since you are just learning, ask your agent to send you a blank copy of a Real Estate Purchase Contract and Addendums from those agencies to study so you can get familiar with all the terminology and wording. Some will give it to you, others won't becasue they are worried that you'll not use them when it comes time to make the offers. Be loyal to your agents and allow them to help you, especially when it comes time to purchase. Their commissions are paid out of the proceeds of the sale from the seller's side. It costs you nothing to use an agent when you are the buyer. As long as they are earning their commissions, I love working with my agents. I am happy to answer any other questions you have. Please check out my profile and we can connect if you like.