Akshaya Thrithiyai - brings home auspiciousness. While this day is considered auspicious for starting new ventures and making new purchases, it is also believed that by doing a good deed on Akshaya Thrithiyai one can earn punya or merit for life.
In the pooja room do not place pictures of Gods along with pictures of departed souls like grandfathers, great grandfathers etc. You can place them in the pooja room on a different side. For eg., if Gods are placed facing east you can place the pictures of the deceased facing south or north etc., If you worship this way then the blessings you will receive will be several fold.
One should go to the temple only during the temple visiting hours. You should never sleep inside the temple.