Q: Is it a DIY Project to seal water from coming up through my concrete floor? I have seen videos online that show how to do it.
A: Not unless you are trained or comfortable with installing a French Drainage System. Putting in a french drain requires digging trenches along the bottom of your basement walls and floor. This will require some heavy duty tools and machinery.
Q: Would I be able to do my own interior waterproofing on the foundation wall or basement floor?
A: You would be wise to consult a qualified waterproofing contractor to do any type of waterproofing project because of the complexity of the nature of the water intrusion. Water coming through your basement walls could be because of many factors which may include your foundation becoming unstable due to pressures from shifting dirt is creating on it.
Water coming in through the floor may be because the ground water level table has risen for some reason and you would again need to install a french drainage system to prevent the water from building up under your basement floor.