A good way to short

is to buy short ETF.

ETF Name (Ticker)

Short QQQ (PSQ)
Short Dow 30 (DOG)
Short S&P 500 (SH)
Short MidCap400 (MYY)
Short SmallCap600 (SBB)
Short Russell2000 (RWM)
UltraShort QQQ (QID)
UltraShort Dow 30 (DXD)
UltraShort S&P 500 (SDS)
UltraShort MidCap400 (MZZ)
UltraShort SmallCap600 (SDD)
UltraShort Russell2000 (TWM)

Short international :

Short MSCI Emerging Markets (EUM)
Short MSCI EAFE (EFZ)
UltraShort MSCI EAFE (EFU)
UltraShort MSCI Emerging Markets (EEV)
UltraShort MSCI Japan (EWV)
UltraShort FTSE/Xinhua China 25 (FXP)

UltraShort Style:

UltraShort Russell1000 Value (SJF)
UltraShort Russell1000 Growth (SFK)
UltraShort Russell MidCap Value (SJL)
UltraShort Russell MidCap Growth (SDK)
UltraShort Russell2000 Value (SJH)
UltraShort Russell2000 Growth (SKK)

UltraShort Sector:

UltraShort Basic Materials (SMN)
UltraShort Consumer Goods (SZK)
UltraShort Consumer Services (SCC)
UltraShort Financials (SKF)
UltraShort Health Care (RXD)
UltraShort Industrials (SIJ)
UltraShort Real Estate (SRS)
UltraShort Semiconductors (SSG)
UltraShort Oil & Gas (DUG)
UltraShort Technology (REW)
UltraShort Utilities (SDP)