Monica, i think we could be more helpful if you could clarify a few points:
1. As Alexander mentions, "outside" sales simply means your sales staff (employed by you, not contracted/outsourced) gets out of the office and meets with prospects face to face. "inside" typically means sales staff (employed by you not outsourced) does their selling over the phone/chat/email/skype, etc. Is this consistent with how you are using the terms?
2. If you don't mind sharing, what is 'average' one-time and/or lifetime value of your typical sale? the answer is probably the single most important factor in how you structure your sales team (inside/outside). Reality is it is hard to make the numbers work to support an outside sales staff if the typical sale is less than $10k.
3. when you say "What resources can anyone share about finding these? ", what "these" are you referring to? Sales people?
Note: if you do go with an outside team it is almost always beneficial to also have an inside team, but not visa versa. Again, not knowing what you are selling and to whom (SMB? enterprise? tech? health? ed? ...B2B is pretty broad) it is hard to give reliable advise.