Tasco Galaxsee 45-114375 375X (375 x 114.3mm) Telescope "timing marks 2 focus" Questions

I have purchased a tasco galaxsee 45-114375 I am looking for an eye piece for the telescope. Where can I purchase one either in person or online. thank you for your time Mark Many places on-line. Here

...2. Remove the corrector plate. Mark any shim locations with a marker on the outside of the corrector plate (remove after re-installation)3. Make a solution of 50% distilled water and 50% isopropyl ...