Punkin, great choice of LGB track and power supply! These are very robust products. You do not need joiners, as they are included with every piece of track, unless you have some specific use in mind. Best wishes from Tokyo, Zubi
PS Annie is short for Anniversary edition of the 4-6-0, they modified the loco chassis n-th time and added some detail, but the tender is still the original unimpressive moulding. The particular colour scheme you chose is not prototypical for this locomotive (which is one of the ET&NWC "Tweetsie" engines"). The bumble bee colour scheme was used on D&RGW C-16 #268 for 1949 Chicago Railroad Fair and later to mimic this scheme on C-18 #319, K-28 #473 and K-36 #483 for use in films. This was all for fun, not as a regular paint scheme, although #268 retained the yellow paint scheme later in service.
PS Annie is short for Anniversary edition of the 4-6-0, they modified the loco chassis n-th time and added some detail, but the tender is still the original unimpressive moulding. The particular colour scheme you chose is not prototypical for this locomotive (which is one of the ET&NWC "Tweetsie" engines"). The bumble bee colour scheme was used on D&RGW C-16 #268 for 1949 Chicago Railroad Fair and later to mimic this scheme on C-18 #319, K-28 #473 and K-36 #483 for use in films. This was all for fun, not as a regular paint scheme, although #268 retained the yellow paint scheme later in service.