Amy,
I find that sending close friends or family to your Etsy shop is impersonal. The only time I can remember a friend of mine purchasing something from my shop was when he visited it on his spare time without my knowledge, made two purchases to have shipped to his sisters house for her birthday. When I deal with nearby relatives, I have always made the things for them on the spot or brought it to them and received cash/check in return.
I am not familiar with GoDaddy software since I keep track of all my books with digital files for paperwork and use Excel where I have my Etsy pricing formulas and sale tracker all designed with the fees and formulas in place that auto compute. However, I am sure there is a way to manually input or account for your costs and profits in the software. If not, I would start to search for a better solution. What happens when a neighbor wants a gift? At some point you have to be solely independent in your business and not rely upon a commerce site to carry you to list something for sale and pay their fees for every single purchase made in your business. It is better to prepare for doing business multi channeled now while you can.
For keeping track of inventory separately I also use my handy spreadsheets so make a custom item or diving up supply usage is not a complicated process for me. There are scanning inventory solutions out there when you eventually hit a bulk state, but for your smaller state of business now, it should be pretty streamlined and easy to account for what is present and what is not in your craft space. Use labels or tags if need be for organization and assign codes to your materials and pieces so you can calculate when you need to replenish certain items from your supplier.
If you are using a pricing formula and documenting each item created, you should have a listing of how much material is being used for each product. By doing this you are not only able to more accurately compute your costs but also ease in the tracking of inventory for product on hand, supplies for product replenishment, and calculate what you are capable of. What if you are contacted by an individual that wants 12 of one piece? You need to know what you are capable of fulfilling with any random request.
For giveaways or any form of market promotion, it is pretty simple. A successful company will dedicate 40% of their profitable income to marketing. A giveaway is just another way to spend your marketing budget. If you are currently not in a profitable state yet, than it is really up to you to determine how much cost you are willing to dedicate to market your shop and where the most returns will be gained. For the accounting side, it is just an expense of materials you are using with no return on it. Therefore, you can place it under marketing/business expense and account in your materials inventory the product amount used.
Hope this makes sense since it is fairly late here. If you have any other questions, feel free to ask.