What is a standard Pokemon Standard foil?
Standard Foil Cards are cards that have a Holofoil design on the image of the Pokémon on the standard card. These are almost always rare (other than specially printed cards) and will be marked A*H for rarity. [ejemplo] (https://bulbapedia.bulbagarden.net/wiki/kingdra_(Burning_shadows_31)).
What is a parallel set in the Pokemon TCG?
The “Parallel” set simply refers to what are more commonly called “Reverse Holo” cards. Every card has a reverse version of Holo, with the exception of some full art cards. Here is an example! Pretty neat if I do say so myself! Hope that clears things up for you!
From which set of Pokémon cards?
To identify the set, look for a small symbol at the bottom of the card, next to the card number. There are plenty of these established symbols. 5-6 Sets are released every year, each with a different set symbol, and they’ve been printing cards since 1999!