I need a no-frills decoder recommendation for a Bachmann HO S4 Diesel.  Also, a link to a 
how-to decoder installation video.

Visit sieversbenchwork.com.  Precut 1" X 4" pine pieces.  Various lengths & widths.
Easy to use instructions.  All the necessary nuts, bolts and screws.  I joined together 5
2' X 4' sections in half an hour.  Very sturdy and stable.  One poster was right. If you decide on a basic 4'X8' (or any other dimension), get the lumber dealer to cut 2'X4'
sections.  Easier to transport and handle.
I have a 6'X10' L-shaped figure 8 layout "in the middle of the room".
Once you get past this part, go to the thread being done by "Saved1".

Really looking good.
I have a 6' X 10' figure 8 type double track layout using EZ Track & WS Sub Terrain Products.
Here's what I did to blend the foam sheets to the EZ Track roadbed.
Mix a small batch of Hydrocal.  While it is still wet, using a sponge brush, spread it over the seams where the foam sheets meet the risers and over the roadbed right up to the ends of the ties on the EZ Track.  Let it dry, then apply your favorite shade of "Undercoat". 

I have a 6' X10' L-shaped layout in a figure 8.  I am considering the purchase of a Dynamis System. 
Do I need to install buss wiring if I buy the Dynamis?