I see you have chatted with Erin and I'd love to throw my 2 cents in as well. I assume the signed agreement is the full Purchase and Sales Agreement and that the home inspection went well for you to go forward? If so, then your bank will send out an appraiser to the property, who will look at the condition, size of rooms and foundation, etc. as well as look at the comparable sold properties in the area to come up with a value. If the value is at your purchase price or higher, then you are good to go forward with the sale and the bank is okay with giving you the loan as long as nothing changes with your credit history. Usually it can take a bank from 3-4 weeks from the time of an accepted offer to do up a full Mortgage Commitment letter, which basically states that your credit score is good and finances haven't changed to still buy the home. So I would recommend buying any big purchases after you close on the home! :o)
Once that is obtained, then you can head to closing. At this point you would work wth your attorney to choose a day and time for the closing. They will ask you to bring 2 forms of ID with you, like a driver's license and passport, as well as a bank check if necessary for any closing costs if needed. Plan on a minimum of 1-2 hours or so to be at the closing to sign all the mortgage documents, and then you'll get the keys to the home once the property is recorded at the Registry of Deeds, and you can move into the home anytime after that.
You do have a contingency to get your deposits back if you can't get financed for the home for some reason, so keep that in mind if something does go wrong and your bank can't finance you. But at this point, if the appraisal goes well and you keep things steady with your credit and job history, just keep talking with your mortgage broker and making sure you work with him/her to get all information necessary for the bank to process the loan. Then you should be fine. I hope all goes well with your home buying process!