Here's a comprehensive Battling Guide to Pokemon TCG Pocket:
Basics of Battling
•Deck Size: You build decks with 20 cards, focusing on Pokémon and Trainer cards as there are no Energy cards in your deck.
•Energy Zone: Energy is automatically generated once per turn in the Energy Zone. Use it wisely as unused energy does not carry over to the next turn.
•Objective: Win by scoring three points, which you get by knocking out your opponent's Pokémon. Pokémon ex give 2 points instead of 1 when knocked out.
Gameplay Mechanics:  
Turn Structure:
•Draw Phase: Start by drawing one card unless it's your first turn.
•Active Pokémon: You begin with one Active Pokémon and up to three on the Bench.
•Actions: You can attach energy, play Trainer cards, evolve Pokémon (only if it's been on the field for a turn), and attack.
•End of Turn: Once you've attacked, your turn ends.
Card Types:
•Pokémon: Include Basic, Stage 1, Stage 2, and Pokémon ex. Each has different HP, attacks, and sometimes abilities.
•Trainer Cards: Divided into Items (playable multiple times per turn) and Supporters (one per turn).
•Retreat: Retreat once per turn to swap your Active Pokémon with one from your Bench, but this costs energy.
Strategies for Battling:  
Deck Building:
•Balance: Ensure your deck has a mix of attackers, defenders, and utility Pokémon. Don't over-diversify types unless you understand energy distribution well.
•Synergy: Look for Pokémon with abilities or attacks that complement each other, like those that can heal or boost damage.
•Energy Management: Since energy is limited to one per turn, plan your attacks and evolution around this constraint. Use Trainer cards like Energy Acceleration to bolster your energy if needed.
•Type Matchups: Understand type advantages; for example, Fire is strong against Grass but weak to Water. This knowledge can dictate your deck composition or when to switch Pokémon.
Tactical Play:
•Use Abilities: Some Pokémon have abilities that can be activated manually to gain an advantage, like healing or drawing cards.
•Item and Supporter Timing: Use Items and Supporters at the right time for maximum effect, like using a Poké Ball to fetch a key Pokémon or a Supporter to disrupt your opponent.
Unlocking Battles
•Leveling Up: You need to reach level 3 to unlock battles. Focus on opening packs and completing missions to gain XP.
•Solo Battles: Use these to learn the game's mechanics, test decks, and earn rewards. They're against AI with increasing difficulty tiers.
Versus Mode:
•Random Matches: Battle against random players worldwide.
•Private Matches: Play with friends by entering a shared password.
Tips for Improvement: 
•Practice Solo Battles: They offer a safe space to try new decks and strategies without losing anything.
•Watch and Learn: Observe how other players build decks or play through community-shared resources or live streams.
•Stay Updated: New cards or game updates can change the meta; keep up with what's popular or banned.
•Community Engagement: Join forums or social media groups to discuss strategies, deck builds, and tips.
This guide aims to give you a solid foundation for battling in Pokemon TCG Pocket. Remember, the game is about strategy, patience, and a bit of luck with card pulls. Keep refining your decks and tactics based on your gameplay experiences and community insights.